Express

Question 1

DNS

Answer 1

Domain Name System, the phonebook of the internet.
DNS translates domain names to IP addresses so browsers can load internet resources.
DNS servers eliminate the need for humans to memorize IP addresses.

Question 2

What is Express useful for?

Answer 2

handling http requests, creating APIs

Question 3

How does DNS work ?

Answer 3

converts a hostname(www.example.com) into an IP address

Question 4

IP address

Answer 4

Internet Protocol: each device connected to the internet has a unique IP address so it can be identified.